I have no GL1500's in my stable as of this week.
I removed these Flag Poles from my 1996 GL1500 -
They mount on the antennas - they will only fit a 1500 -
They were manufactured by Russ Magers and no longer made

Comes with the mounts, poles, and extra base pole (different shape than a top pole) and the wrench tool for tightening.